ListSellTrade is a merchant site that allows users to access online auctions, fixed price listings, business sale listings, classified advertising, recruitment, as well as to promote a users business...

eBay Listing Recommendation API allows developers to integrate different types of listing types into their data. Some of the listing types are category, condition descriptions, shipping eligibility,...

Bidvoy is a product value tracking service for eBay. By examining eBay auction data, Bidvoy tracks price trends for products over time, allowing you to examine that products average price, changes in...

Atosho is an e-commerce company based in Copenhagen. Along with Retailer API, Atosho offers Channel Partner Search API that helps developers to create a correspondence between XML and JSON results of...

The service consolidates online catalog listings from an unlimited selection of products and sellers, aiming to provide a single listing of all products available from any online provider. Its search...

Our vouchers and offers API includes a geocoded searchable data base of local and national vouchers, voucher codes, offers and discounted restaurants and hotels. The service currently allows data to...

From their site: Bountii is a search engine that finds pricing information for electronics and appliances. We continuously aggregate pricing information from top internet retailers using a variety of...

Systembolaget, the Swedish alcohol monopoly mandated by the Swedish state to help control the medical and social harm caused by alcohol, has released a simple API to retrieve product information. The...

Grocery Server is a search engine for groceries and food. Users can search GroceryServer for grocery items by location, and results include local ads, circulars, and coupons for groceries by location...

Lauritz is a northern European auction site for art, antiques, home furnishings, and luxury items. All site visitors are free to view items up for bid, but only users registered with the site can bid...

Twitter search API with optional restriction on language, from, to, and hashtags. Use it to find tweets, people and trends. Note that Summize was acquired by Twitter and is now their official search...

blekko is a search engine that sorts out spam, content farms and malware by crawling a subset of about 3 billion pages. To improve search results, blekko uses a tool called a slashtag that organizes...

From their site: The SplogSpot API enables you to integrate the power of SplogSpot database into your custom application. It provides a simple interface that you can query, results being returned in...

The blogosphere publishes - we index, interpret, filter, and cleanse. All you have to do is tune in and listen. Every day we monitor over 500 thousand pieces of unique content published by 12 million...

Social Mention is a social media search and analysis platform that aggregates user generated content from across the web. The Social Mention API enables developers to interact with the Social Mention...

The BooRah Restaurant Search API returns a list of restaurants based on specified name and location parameters. The name can be a full or partial restaurant name, a type of cuisine, or a type of food...

The DoubleClick Search API enables users to upload data about conversions (including offline conversions) and download reporting data for use in their applications. Users can combine downloaded data...